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Finding the Fourth Proportional to 522,693.40, 783,233.70 and 388,946.20

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Solution

The fourth proportional to 522,693.40, 783,233.70 and 388,946.20 is: 582,819.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,693.40 : 783,233.70 = 388,946.20 : x
  2. Step 2: Convert to fraction form
    522,693.40/783,233.70 = 388,946.20/x
  3. Step 3: Cross multiply
    522,693.40x = 783,233.70 × 388,946.20
  4. Step 4: Simplify right side
    522,693.40x = 304,635,771,326.94
  5. Step 5: Solve for x
    x = 304,635,771,326.94/522,693.40
  6. Step 6: Final answer
    x = 582,819.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.